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Wolterbeek, N. (author), Garling, E.H. (author), Mertens, B.J. (author), Nelissen, R.G.H.H. (author), Valstar, E.R. (author)Background The mobile-bearing variant of a single-radius design is assumed to provide more freedom of motion compared to the fixed-bearing variant because the insert does not restrict the natural movements of the femoral component. This would reduce the contact stresses and wear which in turn may have a positive effect on the fixation of the...journal article 2012